Updated MiniBooNE neutrino oscillation results with increased data and new background studies
| العنوان: | Updated MiniBooNE neutrino oscillation results with increased data and new background studies |
|---|---|
| المؤلفون: | MiniBooNE Collaboration, Aguilar-Arevalo, A. A., Brown, B. C., Conrad, J. M., Dharmapalan, R., Diaz, A., Djurcic, Z., Finley, D. A., Ford, R., Garvey, G. T., Gollapinni, S., Hourlier, A., Huang, E. C., Kamp, N. W., Karagiorgi, G., Katori, T., Kobilarcik, T., Lin, K., Louis, W. C., Mariani, C., Marsh, W., Mills, G. B., Mirabal-Martinez, J., Moore, C. D., Nelson, R. H., Nowak, J., Parmaksiz, I., Pavlovic, Z., Ray, H., Roe, B. P., Russell, A. D., Schneider, A., Shaevitz, M. H., Siegel, H., Spitz, J., Stancu, I., Tayloe, R., Thornton, R. T., Tzanov, M., Van de Water, R. G., White, D. H., Zimmerman, E. D. |
| المصدر: | Physical Review |
| بيانات النشر: | APS, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Physics, Particle physics, Photon, 010308 nuclear & particles physics, Detector, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, MiniBooNE, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, High Energy Physics::Experiment, Fermilab, Neutrino, Nuclear Experiment (nucl-ex), 010306 general physics, Neutrino oscillation, Event (particle physics), Nuclear Experiment, Lepton |
| الوصف: | The MiniBooNE experiment at Fermilab reports a total excess of $638.0 \pm 132.8$ electron-like events ($4.8 \sigma$) from a data sample corresponding to $18.75 \times 10^{20}$ protons-on-target in neutrino mode, which is a 46\% increase in the data sample with respect to previously published results, and $11.27 \times 10^{20}$ protons-on-target in antineutrino mode. The additional statistics allow several studies to address questions on the source of the excess. First, we provide two-dimensional plots in visible energy and cosine of the angle of the outgoing lepton, which can provide valuable input to models for the event excess. Second, we test whether the excess may arise from photons that enter the detector from external events or photons exiting the detector from $\pi^0$ decays in two model independent ways. Beam timing information shows that almost all of the excess is in time with neutrinos that interact in the detector. The radius distribution shows that the excess is distributed throughout the volume, while tighter cuts on the fiducal volume increase the significance of the excess. We conclude that models of the event excess based on entering and exiting photons are disfavored. Comment: 28 pages, 26 figures |
| وصف الملف: | text |
| اللغة: | English |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::256f882aec7c73ec678e404ba090a38aTest http://repo.scoap3.org/apiTest |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....256f882aec7c73ec678e404ba090a38a |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |